Using A Certain Spell

"So this might sound a little... different than you're probably expecting from me," you say, confident this is nowhere near the strangest request she has ever had, "but all I can think of is Amelia telling me you know the spell that started this whole incident and how I... kinda want to see what it's like to go through with it."

You pause for a moment before adding, "Without the mind control potion part, of course."

Susan laughs as she finishes removing her top, exposing the black bra beneath it that quickly joins it on the floor to let her large, tanned breasts pop free. "So instead of your cum dump, I'm to be your cow in need of milking?" she asks as she unzips her skirt to leave herself only wearing her black panties, "I can do that, sure."

She walks over to the bed, laying down on her back and propping herself up with your pillow. "Though..." she says playfully, "How do you know that I won't try the same thing as that naughty little girl?"

"Two reasons," you reply even as your eyes roam down to openly stare at her exposed tits as her nipples harden in the cool air, "One, from what I understand, she was only able to do it in that specific way because of her biology. Two, you said no more tricks or tests and... somehow I believe you."

Susan nods, licking her lips. "Then come here," she says, cupping her breasts and lifting them up towards you, "and I'll teach you one of the ways to cast it."

Now it is your turn to take off your shirt and pants, leaving you only in your boxer shorts as you climb onto the bed and on top of Susan. "Place your forefingers on my nipples and push inwards," she says as she shifts her hips so that her panty-clad crotch can rub against the bulge tenting your underwear, "Firmly but not too hard now."

Following her instructions, you place your fingers over her nipples and press down on them. This draws a small coo from her before she says, "Now let the magic flow into me, and think about... well... milk. The flavor, the texture, the way it slides down your throat and into your stomach, and how much you wish to have some right now. Then, once you feel the power at your fingertips are fully gathered... Say. The. Word."

It is rather impressive how her husky voice is able to make explaining how to cast a spell sound so lusty and desirable, the fact she is still grinding her crotch against yours helping with that, but you try to concentrate on both the gathering of energy and the imagery she wants you to fill your head with. You think of times you have drunken milk in the past as your fingertips tingle and you whisper, "Lactiorus."

Susan lets out a soft hiss of pleasure, her lips parting ever so slightly as she arches her back towards your fingers. You feel the warm flow of energy going from your hands to her breasts and you rub your fingertips just a little bit harder against her pink peaks, which draws another moan from her even as you start to feel her boobs grow slightly larger in response. You move your head in closer, the urge to kiss her shooting through you.

Unexpectedly, she brings up her own hand and places her forefinger over your mouth. "Sorry, Sweetie," she says, even as she shudders at the feeling of her own growing breasts, "but there are three things I will only ever do with my husband. Kissing is one of them."

Pulling your head back, you are unable to hide your disappointment as she withdraws her finger and you grumble, "So what's the other two?"

"Face sitting and reverse cowgirl," she replies casually giving you a soft smile.

"Good to know," you say as you suddenly press down a little bit harder on her nipples as they grow puffier and thicker in time with the expansion of her chest.

Susan lets out a slightly surprised coo in response, her back arching again as she pants, "E-Easy there. Might wanna stop now. Don't want them to pop, do we?"

You look down and your eyes widen as you pull back your fingers and see Susan's breasts, which were already quite full, have now more than doubled in size. Once again, she cups the bottoms of both her tits and bounces them up and down experimentally. "As it is," she says, "It's going to take some doing to make sure I fit in my shirt when we're done."

She looks up at you, moving her hands so that she can tug on her nipples. A faint trickle of liquid dribbles to the surface as she does so and she coos, "So c'mon... drink up."

In response, you let your vision unfocus for a moment so you can see her Lifelines. Noticing a trail of light that starts at the hollow of her throat, you lean your head in again and extend your tongue so that you can follow the path down her skin. Susan lets out a soft sigh, tilting her head to allow you easier access as your tongue tip moves down to trace her collar bone and then lower still to the spot just above the space between her breasts. "Mmmm," Susan says, "You're definitely used to following those now."

You follow the path towards her right tit, swirling around the engorged flesh in a circular pattern that grows smaller as you approach your ultimate goal. The scent of dairy begins to reach your nose once you are only inches away and you roll your eyes up to look at her as you finish your last circle and hungrily pop the peak of her breast into your mouth to take a long, loud slurp at it.